<div class="control-group">
    <div class="controls">
        <label for="1group_12" class="checkbox">
        <input type="checkbox" rel="1group_6" checked="checked" id="1group_12" value="12" name="jform[groups][]">
        <span class="gi">|&mdash;</span><span class="gi">|&mdash;</span>Client
        </label>
    </div>
</div>